CRS Quantitative Research Methods 2

Question 1

A researcher wants to determine if there is a statistically significant difference in mean scores among three or more independent groups. Which test is most appropriate?

Accepted Answer

One-way ANOVA

Answer

One-way ANOVA compares means across three or more independent groups simultaneously, controlling the Type I error rate.

Question 2

Which sampling method involves dividing the population into subgroups and then randomly sampling from each subgroup proportionally?

Accepted Answer

Stratified random sampling

Answer

Stratified random sampling divides the population into strata and samples proportionally from each to ensure representation.

Question 3

In regression analysis, multicollinearity refers to:

Accepted Answer

High correlation among independent variables

Answer

Multicollinearity occurs when independent variables in a regression model are highly correlated with each other, inflating standard errors.

Question 4

A Likert scale that ranges from 1 (Strongly Disagree) to 5 (Strongly Agree) is considered what level of measurement?

Accepted Answer

Ordinal

Answer

Likert scales produce ordinal data because they rank responses in order but the intervals between points are not guaranteed to be equal.

Question 5

What does a 95% confidence interval mean in the context of research findings?

Accepted Answer

If repeated sampling were done, 95% of such intervals would contain the true parameter

Answer

A 95% CI means that under repeated sampling, 95% of the constructed intervals would capture the true population parameter.

(CRS) Certified Research Specialist Practice Test

(CRS) Certified Research Specialist Practice Test

CRS Quantitative Research Methods 2